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FOOTHILL <br /> 12793 RAD,DY CREEK LANE LODI, CA 95240 <br /> PH. (209) ,168-9381_ FAX (209) 367-1163 <br /> Harlin Knoll November 8, 1999 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P. O. Box 388 <br /> Stockton, CA 95201 <br /> Fax: 464-0138 <br /> Subject: Sun West Liquors, 2449 W. Kettleman Lane, Lodi, CA LOP Site code: 503357 <br /> Dear Sir: <br /> Please find below a report on the groundwater sampling of monitoring wells for Sunwest Liquors. <br /> GROUNDWATER MONITORING REPORT FOR THE THIRD QUARTER <br /> SUN WEST LIQUORS <br /> History <br /> • On 7/10/1998 Thorpe Oil of Lodi, California removed the three gasoline USTs from the Sun West <br /> Property. Soil samples from underneath the USTs and the dispenser piping indicated that some leaks had <br /> occurred during the life of the gasoline sales operation. Foothill Engineering did a site investigation to <br /> determine the vertical and horizontal extent of the gasoline contamination on 8/13/1998 and 8/2111998. <br /> A listing of the results of analysis of the soil samples is attached. <br /> Geomatrix installed the monitoring well GMX1 at a location+/-25 feet south of the UST excavation and <br /> sampled first groundwater. That analysis is attached. Geomatrix also made three soil borings (GB41, <br /> GB#2, and GB#3) with both soil samples and groundwater samples extracted (see attached map for <br /> location). All samples on GB#1, GB#2, and GB#3 were non-detect for all compounds analyzed (see <br /> attached recaps of data). <br /> The work plan of 5/24199 called for the installation of three soil borings to bz� located on the Sun West <br /> Liquor property and the possible installation of a fourth soil boring on the south side of Kettleman Lane. <br /> Soil samples were to be extracted at predetermined depths for laboratory analysis. A monitoring well to <br /> sample ground water was to be constructed in each of the soil borings. <br /> The first groundwater monitoring event occurred on 7/12/99 and the following is a report of the finding <br /> of the second event which occurred on October 6, 1999. <br /> Sampling Procedure <br /> Monitoring wells were vented and purged by normal methods per standards of the industry (see <br /> Groundwater field Report by Del-Tech Geotechnical Services attached).Purge pump rates were 0.5 Gals. <br /> per minute in all monitoring wells.Groundwater samples were extracted from each monitoring well using <br /> 1 <br />